FR2755029A1 - DEVICE FOR ADJUSTING THE POSITION OF A FASTENING ON A SLIDING BOARD, IN PARTICULAR A SNOWBOARD SURFING - Google Patents

Abstract

The invention relates to a device for adjusting the position of a binding on a gliding board comprising: - a base plate (2) provided with an orifice (20) and an edge (21) of the orifice comprising a first peripheral surface portion (200); - a disc (3) having a contour which protrudes from said orifice (20) and comprising an edge (30) having a second surface portion (300) intended to come into contact with said first portion (200) during the fitting of the disc in the hole (20); - Anchoring means (4) of the disc (3) on the board which can be actuated by clamping to maintain contact between the surface portions (200, 300); - characterized in that at least one of said portions (200, 300) is substantially smooth and constitutes a sliding ramp for the other portion and in that the device comprises; - means for stopping the base plate (2) in rotation, in an engagement position when the anchoring means (4) are actuated for tightening and capable of disengaging when the anchoring means (4) are only partially loosened; thus allowing rotational movement of the base plate (2) relative to the disc (3). The invention facilitates the adjustment of the angular position of a binding on the gliding board.

Description

i Device for adjusting the position of a fastener on a

  Qlisse board, especially snowboarding.

  The invention relates to fastening systems of a shoe on a board and more specifically to the field of snowboarding. It relates to a device for adjusting the angular position of a fastener on a board, in

particular snow surfing.

  The practice of snowboarding is done using an elongated board on which are immobilized the two feet of a user by suitable retaining elements. The positions adopted for the practice of this discipline can be very varied. The feet are generally inclined with respect to the median longitudinal axis of the board.

several tens of degrees.

  In order to make it possible to perform an angular adjustment adapted to the needs of the user, the most widespread system consists in providing a device comprising an elongate base plate provided with means for receiving and securing a shoe comprising a central hole in which is housed a disc which is anchored directly in the board by means of several screws and which holds the plate in position

  on the board by pressing on the edge of the central hole.

  US 5,261,689 describes an example of such a device for a fastener adapted to receive a soft surf boot. In this particular case, the disk is provided with a frustoconical edge comprising a multitude of radial grooves which form a meshing with a multitude of ridges of complementary shape of a frustoconical flange of the central hole of the plate. Adjustment of the base plate is performed by unscrewing the screws securing the disc and moving the plate in rotation to the desired angle. One of the problems encountered in practice, is that by gravity, the disc remains nested and self-centered in the hole of the base plate. Thus, the meshing streaks is retained and creates a significant friction force that opposes the rotation of the plate during manual adjustment thereof. The adjustment is done by mating making it more difficult the

  search for the desired angular position.

  In addition, the successive adjustments tend to create an early wear of the streaks that can lead to a lower holding in rotation of the base plate. Most of the time, the unscrewing of the disc must finally be done entirely to promote the vertical lifting of the disc and allow the rotation of the plate relative to the disc; which makes

  the long and tedious adjustment operation.

  US Patent No. 5,236,216 relates to a similar device in which the disc comprises a circumferential edge forming with the edge of a central orifice of the base plate an annular support surface forming a plane substantially horizontal or parallel to the plane of the board. This bearing surface comprises roughnesses or fine teeth to sufficiently secure the base plate by friction. This device is easier to adjust but can not ensure efficient self-centering of the disk in the orifice, nor significant resistance to rotation due to the flat configuration of the bearing surface. Utility model JP- (U) -3001977 relates to a snowboard binding comprising a base plate pierced with a mounting hole for a disc designed to fit into the orifice on a surface of smooth support in the form of a truncated cone. An independent and offset locking device with a latch is provided on the side of the base plate to lock the base plate relative to the board. This device is however not completely satisfactory because it is necessary to use an additional disk disposed between the base plate and the board which comprises lock positioning slots. The presence of such a disc above all creates an elevation of the shoe relative to the board; which is not very desirable to be able to preserve

  sufficient sensations with the board.

  There exists on the market a fixing device called Clicker 'distributed by the company Shimano which includes a base plate provided with an orifice for the reception of a central disc by interlocking form. The disk includes teeth located around the edge of the disk which engage in a plurality of vertical pins located at the periphery of the disk on a rim of the base plate. About ten pions are spaced a few degrees apart from each other and distributed over an extended portion of the perimeter of the edge of the central orifice of the order of about 180 degrees; which does not allow easy disengagement of the disk to perform the angular adjustment. In addition, the engagement of the dish-shaped disk in the orifice of the base plate does not allow the disk to slide with respect to the base plate. To change the orientation of the plate relative to the disk, it is therefore necessary to unscrew almost completely the anchor screws of the disk to lift it vertically enough to disengage the teeth and pins forming the rotational stop means. The vertical lifting of the disc is not practical and generally requires the use of a screwdriver to leverage. Moreover, it is necessary to maintain this state during all the

  duration of the angular adjustment operation.

  The object of the present invention is therefore to propose a device for adjusting in rotation a base plate with a locking disc which provides a satisfactory solution to the

  encountered problems of the devices of the prior art.

  More particularly, according to the present invention, the base plate generally supporting the boot can be more easily rotated while the anchoring means of the disk are partially loosened only. The setting operation is thus much faster. The adjustment can be done in a more continuous way and by displacement without coupling of the

  base plate; thus allowing a more efficient fine adjustment.

  Finally, the device according to the invention has no elements subject to friction that can cause wear problems.

  and affect the operation of the device.

  For this purpose the invention relates to a device for adjusting the position of a binding on a gliding board, in particular a snowboard comprising: a base plate for receiving a shoe; said plate being provided with a circular orifice and whose edge comprises a first peripheral surface portion; a central disk having a contour which projects beyond said circular orifice and comprising a peripheral edge having a second surface portion intended to come into contact with the first surface portion when the disc is engaged in the orifice of the base plate , anchoring means of the central disk on the board operable to clamp to firmly maintain the contact of the surface portions between them without the possibility of rotational movement of the base plate relative to the disk, characterized in that one to at least one of said surface portions constitutes a sliding ramp for the other surface portion and in that the device further comprises means for stopping the base plate from rotating with respect to the central disk, in a position d commitment when the anchoring means are actuated to the clamping and able to disengage, by sliding one of said surface portions on the ramp formed by the other and de centering the central disk with respect to the orifice of the plate when the anchoring means are only partially loosened; thus allowing a rotational movement of the base plate relative to

to the central disk.

  The invention may also comprise a base plate connected directly to the board by anchoring means while it is the central disc which is rotatable relative to the base plate. This inverse case is also part of the

fixed by the invention.

  Preferably, the two surface portions have a frusto-conical complementary shape. This improves the contact of the disk on the plate; which promotes both sliding during the decentering of the disc and the return to centering

of the disc.

  According to another characteristic of the invention, the anchoring means consist of several screws passing through holes distributed on the central disk and intended to anchor in the gliding board; the partial loosening of the screws allowing the disc to be offset from the orifice of the base plate by lateral displacement of the base plate which causes the inclination of the central disc. Thus, it is obtained by simply off-centering the disk relative to the base plate, a disengagement of the stop means and therefore a freedom of movement

in rotation of the base plate.

  According to an advantageous characteristic of the invention, the surface portions in contact with one another have a slope relative to the general plane of the base plate of between 25 and 45 degrees; preferably between 30 and 35 degrees (limit values included). These values were chosen to retain both a self-centering function of the disk in the orifice of the base plate and to promote the sliding of the disk to cause off-centering during the adjustment.

rotation of the base plate.

  Other features and advantages of the invention will be

  better understood with the help of the description that follows, in

  Regarding the accompanying drawings which illustrate, by way of example the invention. Figure 1 is a perspective view of the device of the invention before mounting the disk on the base plate; Figure 2 is a top view of the device of the invention of Figure 1; Figure 3 is a bottom view of the central disc alone according to the device of the invention; Figure 4 is a side view of the central disc alone according to the device of the invention; Figure 5 is a top view of detail of Figure 2; Figure 6 is a sectional view along VI-VI of Figure 5 in the clamping position of the disk and thus blocking the device on the board; Figure 7 is a sectional view similar to that of Figure 6, in partially disengaged position of the disc; Figure 8 is a sectional view similar to that of Figure 6, in the angular adjustment position of the base plate of the device according to the invention; Figure 9 is a partial top view according to a variant of the invention; Figure 10 is a partial top view according to another embodiment of the invention; Figure 11 is a sectional view similar to Figure 6 according to another embodiment of the invention; Figure 12 is a side view of the central disc alone according to the variant of Figure 11; Figure 13 is a view similar to Figure 5 according to another embodiment of the invention; Figure 14 is a perspective view of a device according to another variant of the invention; FIG. 15 is a sectional view of the device of the view of

Figure 14.

  Referring now to the details of the drawings, Figures 1 and 2 show a device of the invention which comprises, for a better understanding of the invention, only part of the elements of a snowboard binding adapted to

a soft shoe.

  In the example shown, the device 1 comprises a base plate 2 intended to rest on the upper surface of a board (not shown) in a variable orientation with respect to the median longitudinal axis of the board; generally substantially transverse to said axis. The plate may comprise side walls 23, 24 extending substantially vertically for lateral support of the shoe. These walls serve as support for the anchoring of fastening means of the shoe; in general, means

  known type straps and ratchet locks (not shown).

  The walls meet towards the rear of the device by a curved wall of heel 25 serving to support an element of

  rear support 10 hinged to the side walls 23, 24.

  The base plate has substantially the dimensions of a shoe sole. It is provided in its central part with a circular orifice 20 of about 8 to 10 cm in diameter. The orifice is delimited by a circular peripheral edge 21 of particular shape comprising, more specifically, a peripheral surface portion 200 of frusto-conical shape; that is, a portion whose surface has the shape of a flared ring

gradually upwards.

  In a complementary manner, the device comprises a central disk 3 having a contour which projects slightly beyond the circular orifice 20. It is itself provided with a peripheral edge 30 having a surface portion 300 of shape substantially complementary to that of the portion of the edge of the orifice 20, as shown in FIGS.

  4. It is therefore a portion of surface of frusto-

  conical slope substantially equal to that of the portion 200.

  By frusto-conical surface; is meant a surface whose profile is generally inclined to form a slip ramp but which is not necessarily rectilinear. It can, indeed, be of concave profile or, conversely, of convex profile without that one so far leaves the frame of the

present invention.

  The surface portions 200, 300 are intended to come into contact with each other to form a cone-on-cone engagement of the disk in the orifice of the base plate. Such

  interlocking has, among other things, the advantage of

centering the disc in the hole.

  The central disc 3 is secured to the board by anchoring means 4 such as screws 40, 41, 42, 43 passing through holes distributed on the central disc. In the example shown, the screws are four in number and are arranged at the four corners of a square 400 spaced 4 cm to meet the standard

  currently the most widely spread.

  Preferably according to the invention, the surface portions 300 in contact with each other are smooth so as to promote sliding on one another at a time during a displacement of the base plate. in rotation relative to the disk and when sliding in a radial direction to reach an off-center position of the disk relative to

  the orifice or vice versa to resume a centered position.

  Even if it is not preferable, we can admit that only one surface portion is smooth; while the other has a rough or streaked surface condition. In this case, the smooth surface portion serves as a ramp to allow

  the sliding of the other surface on it.

  As shown in FIG. 5, the device comprises means for stopping the base plate 2 in rotation relative to the central disc 3, which is formed by a meshing of a series of teeth 310 positioned on the periphery of the edge 30 of the disk; engaged with engagement means 22 occupying a limited arc portion and including projecting members 220, 221, 222 positioned on the base plate 2. The number of protruding members may be variable to provide a restraint. sufficient rotation; one being the minimum to predict. It is important for a good operation of the invention that the length of the arc portion formed by the occupation of the engagement means is short; not more than about 90 degrees, preferably less than 20 degrees, to allow easy disengagement of the stop means. Of course, the good arc length is a function of the geometry of the mesh more or less clear (streaks, teeth, ...) or materials used friction coefficient more or less low; and this to answer the compromise between a sufficient rotation lock of the plate and

  an ease of disengagement of the stop means during adjustment.

  Of course, the teeth can be replaced by streaks or cells of variable shapes and dimensions without

  so far from the scope of the present invention.

  In the example described, the peripheral edge 30 of the central disk comprises an upper lip 330 carrying said series of teeth 310. This lip radially extends the surface portion 300 and bears on a flat annular flange 230 of the edge 21 of the orifice the base plate when the disk is in the nested position in the orifice; said flange 230 bearing

said fixed engagement means 22.

  The projecting elements 220, 221, 222 consist of vertically oriented pins located in the edge 230 of the plate and cooperate with the series of teeth 310 filling the periphery.

of the lip 330 of the disc.

  The operation of the invention will be described with reference to FIGS. 5 to 7. FIGS. 5 and 6 show the device in

  blocking position of the base plate relative to the disk.

  For the tightening of the disk by the anchoring screws 4, a significant pressure is exerted on the surface portion 200 of the edge of the orifice; which keeps the plate against the board. For proper operation, there must be clearance between the bottom surface of the disc and the surface of the board to control the amount of clamping. In this configuration, the disc 3 is perfectly fitted into the orifice 20 and the stop means is in the engagement position so that the rotation of the

plate 2 is impossible.

  To make the adjustment in rotation of the base plate, it suffices to loosen the anchoring screws 4 a few turns only to allow a slight vertical play of the disc as shown in Figure 7. In this case, the rotation of the plate is still prohibited because the disc remains nested in

  the orifice of the plate by its own weight.

  To achieve the disengagement of the stop means in rotation, it suffices to obtain the inclination of the disc by lifting the disc from the opposite side to the stop means as shown in Figure 8 or again in Figure 5 in dashed lines. The upper lip 330 which includes the teeth 310 moves away from the projecting elements 22 of the plate. In this configuration, the plate can be moved in rotation in the direction and the value

angle desired.

  To obtain the blocking of the disk, it suffices to carry out the operation of tightening the screws and the disc resumes its position centered in the orifice and blocks the base plate in

  his new position on the board.

  Preferably, the surface portions 200, 300 in contact with one another have a slope A with respect to the general plane P of the base plate of between 25 and 45 degrees; preferably between 30 and 35 degrees (limit values included). The choice of these values is related to the need to ensure both a self-centering of the disk to facilitate its positioning, an interlocking having a certain resistance to rotation in the clamping position of the plate and also an interlocking which allows a sliding radial in

  particular to promote decentering during adjustment.

  FIG. 9 illustrates a different embodiment of the stop means in which the protruding elements 220, 221, 222 are teeth of complementary shape to those present on the periphery of the disc. The shape of these is, for example, sawtooth and two adjacent teeth are separated from a complementary shape space. Such a form of teeth has the advantage of being easily disengaging and reengaging during the

recentering the disc.

  FIG. 10 shows another variant in which the rotation stop means is formed by the engagement of a series of teeth 210 positioned on the periphery of the edge 21 of the base plate, and is engaged with a means of rotation. engagement 32 comprising a plurality of projecting elements 320, 321, 322 positioned on the edge of the disc. In this case, the upper lip 330 comprises the engagement means 32 in the form of three teeth 320, 321, 322, for example, the rest of the periphery of the disc being devoid of engagement means. The lip is supported on the annular flange 230 of the plate which comprises the series of teeth 210 which occupies the entire circumference of the edge of the orifice. Of course, the teeth of the stop means could be replaced by other equivalent retaining elements such as streaks for example. Similarly, the engagement means 32 carried by the disk could consist only of a single protruding element for example, without we go out so far

of the scope of the invention.

  FIGS. 11 and 12 illustrate a variant of the invention in which the means for stopping the base plate 2 in rotation relative to the disc 3 comprises a series of grooves 310 filling the inclined surface portion 300 of the edge 30 of the disc which contacts the surface portion 200 of the edge 20 of the base plate. The stop means also comprises at least one projecting engagement means 22 consisting of at least one peg, for example, positioned inclined on the surface portion 200 of the edge of the base plate. As in the previous examples, it is important that the engagement means occupy only a small arc portion of the edge of the plate; this to promote the lateral clearance of the plate by

  relative to the disc, preferably on the opposite side of the disc.

  However, it can be envisaged that two engagement means are arranged diametrically opposite in a certain direction on the edge of the disc to ensure a better locking in rotation of the base plate while making possible the disengagement after partial unscrewing of the anchoring screw in a radial direction perpendicular to

  direction connecting the opposing engagement means.

  In order to facilitate the disengagement, a certain clearance is provided between the lower annular flange of the disc and the rim

  upper ring of the baseplate.

  As shown in the embodiment of Figure 13, it is also possible to integrate the device with an elastic means acting horizontally on the disk to facilitate the disengagement of the stop means. The elastic means 5 comprises, 1 1 for example, two spring elements 50, 51 located on either side of the engagement means 22 and which pushes against the edge 30 of the disc. The spring members 50, 51 are, for example, members of the metal spring blade type. They could be replaced also by elastomeric pads or any other equivalent means. When the screws are partially loosened, the force of the spring elements tends to move the disk on the side with respect to the base plate by sliding over the ramp formed by the surface portions in contact; the engagement means 22 is then disengaged streaks 310 present on the edge of the disc. The rotation adjustment becomes possible. To replace the disk in the housing of the plate, it suffices to apply a counter-pressure on the spring elements by lateral thrust of the disk.

  direction of these elastic elements.

  Figures 14 and 15 show another possible mode of the invention. In this particular case, the disk 3A is made mobile in rotation and the base plate 2A is connected directly to the board by the anchoring means 4. Fixing means 6 are mounted directly on the disk. In the example shown, these fixing means 6 consist of a front support member 60 and a rear support member 61 opposite to the front support member. These elements are in the form of bending and torsion-resistant son loops on which shoe positioning elements 62, 63 are slidably mounted. These positioning elements are on the one hand a rear element 63 in the form of caliper in which the rear of a shoe sole and a bow-shaped front element 62 must be positioned and which comprises a locking lever 620 intended to engage

  on the front edge of the sole of the shoe.

  In the same way as for the previous modes, the disc 3A and the base plate 2A are in contact with each other in respective surface portions 200, 300 which are inclined with respect to the horizontal reference plane so as to to constitute a slip ramp promoting the disengagement of the disc relative to the base plate when the screws 4 which hold the base plate on the board are partly loosened. The disk has the same streak structure on the frustoconical surface portion 300 as the disk of FIG. 12. The striations of the disk thus fill the entire periphery of the surface portion 300. On the other hand, the edge of the orifice of the base plate 2A comprises engagement means in the form of an inclined pin 22, for example, which engages in the

  striations of the disc when tightening the screws 4.

  The elements constituting the device according to the invention may be chosen from resistant materials such as certain metals; steel, aluminum or some metal alloys. We can also use some injected plastics, preferably reinforced, to achieve all or part

elements of the device.

  Of course, other possible modes can be considered without going beyond the scope of this

  invention defined by the following claims.

Claims (6)

  A device for adjusting the position of a binding on a gliding board, in particular a snow board, comprising: a base plate (2, 2A) provided with a circular orifice (20) and an edge (21); ) the orifice comprising a first peripheral surface portion (200); a central disk (3, 3A) having a contour which protrudes from said circular orifice (20) and comprising a peripheral edge (30) having a second surface portion (300) for engaging said first surface portion (200) during the engagement of the disk in the orifice of the base plate, anchoring means (4) of the central disk (3); or respectively said base plate (2A) for connection on the board 1515 operable to clamp firmly to maintain contact of the surface portions therebetween (200, 300) without possibility of rotational movement of the base plate (3) relative to the disk; or respectively of the central disk (3A) with respect to said base plate (2A), characterized in that at least one of said surface portions (200, 300) constitutes a sliding ramp for the other surface portion and in that the device further comprises means for stopping rotation of the base plate (2) relative to the central disk (3); or respectively of the central disk (3A) with respect to said base plate (2A), in an engagement position when the anchoring means (4) are clamped and able to disengage by sliding of one of said portions of surfaces (200, 300) on the ramp formed by the other and off centering of the central disk with respect to the orifice of the plate when the anchoring means (4) are only partially loosened; thereby allowing a rotational movement of the base plate (2) relative to the central disk (3); or respectively of the central disk (3A) by   In relation to said base plate (2A).   2- Device for adjusting the position of a binding on a gliding board according to claim 1, characterized in that the two surface portions (200, 300) have a shape complementary frusto-conical.   3- Device for adjusting the position of a binding on a gliding board according to claim 1 or 2, characterized in that the anchoring means (4) consist of several screws passing through holes distributed on the central disk and intended to anchor in the gliding board; partially loosening the screws allowing the disc to be offset from the orifice of the base plate by lateral displacement of the base plate causing a forced inclination of the central disc. 4A device for adjusting the position of a binding on a gliding board according to claim 1, 2 or 3, characterized in that the surface portions (200, 300) in contact with each other have a slope relative to in the general plane of the base plate between 25 and 45 degrees; preferably   between 30 and 35 degrees (limit values included).   - Device for adjusting the position of a fixation on a   sliding board according to any one of the claims   previous, characterized in that the means for stopping rotation of the base plate (2) on the board is formed by meshing a series of teeth or ridges (310, 210) positioned all around the edge (30) of the disc (3); or respectively on the periphery of the edge (21) of the plate (2), in engagement with at least one engagement means (22, 32) occupying a small portion of arc; comprising at least one projecting element (220, 221, 222, 320, 321, 322), and positioned on the   base (2); or respectively on the edge (30) of the disc (3).   6. Device for adjusting the position of a binding on a gliding board according to claim 5, characterized in that the peripheral edge of the central disk (3) comprises an upper lip (330) carrying said series of teeth or ridges (310 ); or respectively said engagement means (32); said lip radially extending the surface portion (300) and bearing on an annular flange (230) of the edge (21) of the orifice of the base plate when the disc is in the nested position in the orifice; said flange (230) carrying said engaging means (22); or respectively, said series of teeth or streaks (210).   7- Apparatus for adjusting the position of a binding on a gliding board according to claim 6, characterized in that 1 '(the) element (s) projecting (220, 221, 222) of the engagement means (22). ) is (are) constituted (s) of a () vertically oriented peg and housed in said flange (230) of the plate; said pin (s) cooperating with a series of teeth (310) lining the periphery of said lip (330) of the disk. 8- Device for adjusting the position of a fixation on a   gliding board according to any one of claims 1 to   4, characterized in that the rotational stop means of the base plate (2) relative to the disc (3) comprises a series of ridges (310) filling the inclined surface portion (300) of the edge (30) disc which contacts the surface portion (200) of the edge (20) of the base plate; The stop means further comprising at least one projecting engagement means (22) positioned at an angle to the portion of   surface (200) of the edge of the base plate.   9- Device for adjusting the position of a fixation on a   gliding board according to any one of claims 1 to   4, characterized in that the base plate (2) comprises a resilient means (5) and which pushes against the edge (30) of the disc to promote disengagement of the rotational stop means. - Device for adjusting the position of a binding on a gliding board according to claim 9, characterized in that the resilient means is composed of two spring elements (50, 51) of the type with elastic blade of metal, located from and other of the engagement means (22).